random parameter造句
造句與例句
手機(jī)版
- Add a random parameter with your url
在你的鏈接中多加一個(gè)隨機(jī)參數(shù)值! ! - Analysis of dynamic characteristic for intelligent beam with random parameters
隨機(jī)參數(shù)壓電智能梁結(jié)構(gòu)的動(dòng)態(tài)特性分析 - Responding analysis for random parameter construction of composite material laminated plates
復(fù)合材料層合板隨機(jī)參數(shù)結(jié)構(gòu)的響應(yīng)分析 - Using optic sieving to obtain the gradation curve for particles with random parameters
用圖像篩選法求取帶有隨機(jī)參數(shù)之顆粒堆的質(zhì)量分級(jí)曲線 - Optimal placement of active rods in active vibration control of smart truss structures with random parameters
隨機(jī)參數(shù)智能桁架結(jié)構(gòu)振動(dòng)控制中主動(dòng)桿的優(yōu)化配置 - ( 2 ) the random parameter and the random distribution of soft soil structure parameter are researched
(二)探討了深基坑降水工程中的隨機(jī)變量以及軟土結(jié)構(gòu)參數(shù)的隨機(jī)分布。 - Secondly , the influences of the random parameters on fatigue propagation are discussed in the fatigue propagation paris formula
其次，論述了疲勞裂紋擴(kuò)展公式中各隨機(jī)參數(shù)對(duì)疲勞擴(kuò)展速率的影響。 - Then the monte carlo method is applied to simulate the random parameter , the length of the column , to acquire ensemble mean square response
用數(shù)值求解了當(dāng)柱長(zhǎng)為隨機(jī)變量時(shí)，剪切柱頂端位移均方響應(yīng)的時(shí)間歷程。 - Active vibration control for piezoelectric intelligent truss structures with random parameters is an important task in the field of engineering structural research , study and control today
隨機(jī)參數(shù)壓電智能桁架結(jié)構(gòu)振動(dòng)主動(dòng)控制是目前結(jié)構(gòu)設(shè)計(jì)與控制研究領(lǐng)域中的重要課題。 - Comparing with the method using monte carlo method alone to simulate both the random parameter and the random excitation , the suggested method can reduce the computational effort greatly
相對(duì)于單純用montecarlo隨機(jī)模擬方法，即對(duì)激勵(lì)與系統(tǒng)隨機(jī)參數(shù)二者都進(jìn)行模擬，本文提出的方法，可大幅度降低計(jì)算工作量。 - It's difficult to see random parameter in a sentence. 用random parameter造句挺難的
- By using vector random field model and second - order perturbation method , viscoelastic stochastic finite element formulation is developed , which can take the correlation of random parameters into account and is suitable for stochastic structural analysis with larger variance of the uncertainties
利用向量隨機(jī)場(chǎng)模型和二階隨機(jī)攝動(dòng)方法，給出了相應(yīng)的粘彈性隨機(jī)有限元列式。能夠考慮參數(shù)的相關(guān)性，更加接近于prony級(jí)數(shù)的參數(shù)測(cè)試過(guò)程。 - The zero - order , the first - order and the second - order perturbation of the eigenvector are also obtained . on the basis of the above formulas , the calculating program is worked out . a simple supported beam , as an example , is calculated when the anti - bending and the mass of every element are taken as random parameters separately
依據(jù)上述計(jì)算公式，在matlab環(huán)境下編制了計(jì)算機(jī)分析程序，以簡(jiǎn)支梁為例，將各單元抗彎剛度和集中質(zhì)量分別作為不定參數(shù)進(jìn)行攝動(dòng)計(jì)算，通過(guò)數(shù)值解和理論解的比較，證明了所采用的計(jì)算公式和編制計(jì)算機(jī)分析程序的正確性。 - Considering the randomness of physics parameters of structural material ( mass density and elastic module ) , the problem of the structural dynamic characteristic analysis based on probability is studied . the problems of dynamic response analysis of closed loop control system based on reliability for the intelligent truss structures with random parameters were studied , in which the randomness of physics parameters of structural material and applied loads and control forces are considered
在考慮結(jié)構(gòu)材料的物理參數(shù)(質(zhì)量密度和彈性模量)為隨機(jī)變量的情況下，對(duì)結(jié)構(gòu)進(jìn)行了基于概率的動(dòng)力特性分析；在考慮結(jié)構(gòu)材料的物理參數(shù)、外加荷載和閉環(huán)控制力均為隨機(jī)變量的情況下，對(duì)結(jié)構(gòu)進(jìn)行了動(dòng)力響應(yīng)分析。 - The values of the program are compared with the theoretical values to verify the program and the formulas which are used in the calculation of the statistics of the eigenvalues and the eigenvectors of a structure with random parameters . the second part : on the basis of taylor ' s expansion of the eigenvalues of structures with random parameters , the formulas calculating the statistics ( the mean value and the variance ) of the eigenvalues and the mode shapes with random parameters are obtained . using the perturbation riccati transfer matrix method , the calculating program is produced
第2部分：根據(jù)具有隨機(jī)參數(shù)結(jié)構(gòu)固有頻率的taylor展開(kāi)式，給出了求解具有隨機(jī)參數(shù)結(jié)構(gòu)固有頻率和振型的均值和方差計(jì)算公式，采用攝動(dòng)riccati傳遞矩陣法，編制了求解結(jié)構(gòu)特征值和特征向量統(tǒng)計(jì)特性(均值和方差)的計(jì)算機(jī)應(yīng)用程序，仍以簡(jiǎn)基于riccati傳遞矩陣法的橋梁結(jié)構(gòu)概率損傷識(shí)別方法研究支梁為例，將質(zhì)量密度作為隨機(jī)參數(shù)進(jìn)行統(tǒng)計(jì)特性計(jì)算，通過(guò)數(shù)值解和理論解的比較，證明了公式的正確性，該計(jì)算公式為橋梁結(jié)構(gòu)概率損傷識(shí)別奠定了理論基礎(chǔ)。 - The main purpose of this paper is to establish viscoelastic stochastic finite element method and non - probabilistic method for uncertain structural analysis of srm grain . several reliability models are analyzed and structural response of srm grain with random parameters under different loads is investigated
本文重點(diǎn)建立了固體藥柱不確定結(jié)構(gòu)分析的粘彈性隨機(jī)有限元方法和非概率方法，研究了藥柱的結(jié)構(gòu)可靠度計(jì)算問(wèn)題以及不同載荷作用下具有隨機(jī)參數(shù)藥柱的結(jié)構(gòu)響應(yīng)問(wèn)題。 - In the second part , we try to apply orthogonal polynomial approximations to the dynamical response problem of the duffing equation with random parameters under harmonic excitations . we first reduce the random duffing system into its non - linear deterministic equivalent one . then , using numerical method , we study the elementary non - linear phenomena in the system , such as saddle - node bifurcation , symmetry break bifurcation , phenomena in the system , such as saddle - node bifurcation , symmetry break bifurcation , period - doubling bifurcation and chaos
本文第二部分嘗試將正交多項(xiàng)式逼近方法應(yīng)用于隨機(jī)duffing系統(tǒng)，提出與之等價(jià)的確定性非線性系統(tǒng)的新概念，并用數(shù)值方法對(duì)該系統(tǒng)在諧和激勵(lì)下的鞍結(jié)分叉、對(duì)稱破裂分叉、倍周期分叉、和混沌等各種基本非線性響應(yīng)進(jìn)行了初步探討。 - Secondly , the response problem of a random structure under evolutionary random excitation is solved by the stochastic perturbation method combined with the unified approach . our derivation is based on the following three indispensable assumptions : 1 , the random perturbations must be small fluctuations ; 2 , the random parameters of the system are mutually independent ; 3 , the random parameters and the random excitation are mutually independent too
2 )將統(tǒng)一解法與隨機(jī)攝動(dòng)法相結(jié)合，推導(dǎo)中采用了三個(gè)不可或缺的假設(shè)： ( 1 )隨機(jī)攝動(dòng)是一個(gè)小量； ( 2 )系統(tǒng)各個(gè)隨機(jī)參數(shù)是相互獨(dú)立的； ( 3 )系統(tǒng)的隨機(jī)參數(shù)與所受的隨機(jī)激勵(lì)是統(tǒng)計(jì)獨(dú)立的。 - In the present study , the effect of centrifugal force was investigated by three dimensional finite element analyses ; the vibration characters of random mistuned blade - disc were also being investigated by probability methods and the young ’ s modulus of material of all blades are regarded as random parameters
建立了某汽輪機(jī)葉片?輪盤的有限元模型,研究了離心力對(duì)失調(diào)葉片?輪盤系統(tǒng)振動(dòng)的影響;利用概率分析方法,研究了所有葉片彈性模量在5 %誤差范圍內(nèi)隨機(jī)失調(diào)葉片?輪盤振動(dòng)情況。 - Several numerical examples are present to illustrate the correctness and practicability of model of dynamic characteristic analysis , dynamic response analysis and optimization of active bars " location built in this paper . the validity of active vibration control for piezoelectric structure with random parameters is demonstrated by means of the computer simulation
最后，通過(guò)數(shù)值算例驗(yàn)證了文中建立的動(dòng)力特性分析模型、動(dòng)力響應(yīng)分析模型和主動(dòng)桿優(yōu)化配置模型的正確性及可行性；通過(guò)計(jì)算機(jī)仿真，表明了對(duì)結(jié)構(gòu)振動(dòng)主動(dòng)控制的有效性。 - Then the unified approach can be applied to it to acquire the ensemble random evolutionary response . since the normal probability density function ( pdf ) may lead to instability of some sample systems when the random parameters taking sufficiently small negative values , an arch - like pdf and a more adaptable - pdf , together with the matching chebyshev polynomial approximation and gegenbauer polynomial approximation , are suggested . numerical examples show that the suggested methods are effective
相比較而言，隨機(jī)模擬法的結(jié)果無(wú)疑是最可靠的，但是它的計(jì)算量嫌大；隨機(jī)攝動(dòng)法的計(jì)算量遠(yuǎn)小于隨機(jī)模擬法，但是它要求隨機(jī)攝動(dòng)量必須是一個(gè)小量；正交展開(kāi)法的計(jì)算精度好于隨機(jī)攝動(dòng)法，其得到結(jié)果與隨機(jī)模擬法得到的結(jié)果幾乎吻合，其計(jì)算量略多于隨機(jī)攝動(dòng)法，但與隨機(jī)模擬法相比要少的多，不過(guò)計(jì)算前的準(zhǔn)備工作較費(fèi)時(shí)。
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